Spring door-closer.



W. GJUST. SPRING DOOR CLOSER. ARPucAnoN man AuG.21,191s.

Lm, Emma Nov. 27, 191?.

INVENTOR ATTORNEY WILLIAM Gr. JUST, 0F BGYID, MINNESOTLA.

SPRING DOOR-GLGSER.

Application A'filed August 21, 1916.

T0 all 'whom t may concern.'

Be it known that I, IVILLIAM fG. `J-Us'i, a citizen of the 'UnitedStates, residing at Boyd, in the county of Lac qui Parle and State ofMinnesota, have invented certain new vand useful Improvements -in SpringDooi'eClosers, of which the following is a specification.

This invention relates to -a spring door closer and has for its objectto provide a simple, strong, inconspicuous and cheap device forapplication to doors, gatesand like hinged parts for automaticallyclosing them after the same have 'been swung open to permit a person topass through.

Another obj ect of the invention is to provide a spring door closerwhich may be made almost entirely of sheet metal, the various partsbeing connected together by bolts and rivets. In connection with thesesheet metal parts are two coil springs for providing the pro-perresilient means necessary for closing the door.

With the above as its principal objects and other objects which willhereinafter be mentioned in detail, the invention consists of the novelconstruction, combination and arrangement of parts hereinafterdescribed, pointed out in the appended claimsand illustrated in theaccompanying drawings, in which;

Figure 1 is an elevation of a portion of a door and door frame with thespring closing device applied thereto.

Fig. 2 is a top plan view of the door closer in position on the door anddoor frame, the latter parts being shown in section with the door fullyclosed.

Fig. 3 is a view similar to Fig. 2 showing the door partly open, and

Fig. 4 is a view of a detail of the invention.

In the drawings, 10 indicates a door frame and 11 the door hingedthereto as at 12.

Fastened to the door frame 10 by screws or otherwise is a rectangular orother shaped plate 13 preferably made of sheet metal, near one edge ofwhich is riveted or otherwise secured a bracket 14 having two outwardlyprojectingarms 15 perforated to receive a hinge bolt or pin 16.Pivotally supported at one end on the hinge pin 16 is a horizontal arm17 here shown as made of sheet metal of channel shape, the upper andlover .flanges 18 of which .Open towel-fl the Specification of LettersPatent.

rateiitea uw. er, iei'a Serial N0. 116,152.

door to prevent a smooth unbroken outer surface as at 19. jThe length ofthe arm 17 may vary to suit conditions but near its free swinging end`the upper and lower flanges 18 are rcut as in Figs. 2 and 3 andthe armbent as `shown at 20, the free end 21 inclining toward the door andcarrying at its eX- tremity on a vertical pin 22 a roller 23. Theflanges 18 at the 'bend 2O ofthe arm 17 overlap as shown and may beconnected together by rivets for the purpose of increasing the stiffnessof said arm.

F astened to the door 11 by `screws or bolts and in line with the arm 17is a loop 24 preferably lmade of two strips of sheet metal connectedtogether at their ends, one .of said strips `25 being perfectlystraightwhile the other strip v26 is bent outwardly between its ends to formalong slot 2.7 in which the roller23 is adapted to travel.

Near the roller 23 but without or exterior to the loop 24 a vertical pin28 is secured to the flanges 18 of the arm 17, to which pin is connectedone end of each of two spiral springs 29, the opposite ends of saidsprings being fastened to loops 30 formed on the plate 13. These loops30 when the plate is made of sheet metal may be formed by cuttingtongues in the plate and bending them outwardly as shown in Fig. 4.

The springs 29 are at all times under tension and tend to swing the arm17 inwardly against the door and so cause the door to close. INhen thedoor is swung open the arm 17 swinging about the hinge pin 16 as an aXisputs the springs 29 under increased tension because of their attachmentto the plate 13 in front of said hinge pin. This increased tensionserves to store up power for the purpose of returning the door to closedposition when released, the roller 23 moving freely in the slot 27 ofthe loop 24.

It will be understood that the door closer hereinabove described asbeing made of sheet metal may if preferred be made of cast metal orcertain parts be cast and other parts be made of sheet metal. For thesake of simplicity and cheapness the whole device with the exception ofthe springs has been shown and described as formed of sheet metal.

What I claim is 1. A spring door closer comprising a base plate fixed-to the frame of thedocr, an arm pivotally mounted on the hase plate andconstructed of channel iron having its side flanges disposed in a.horizontal plane, one end of the said channel iron being bent at anangle, the said llanges being cut and overlapped, the said overlappedportions being riveted or otherwise fastened together whereby theeXtreme terminal of the said arm is disposed at an angle with respect tothe main portion of the arm, means mounted on the end of the saidangularly bent portion to slidably engage the door, the latter beingprovided with an elongated opening for the reception of the said means,and tension springs fixed to the angularly bent portion of the arm andto the said base plate.

l 2.l A spring door closer comprising a base plate constructed of asubstantially rectangular piece having its edges provided withincisions, the incised portions being bent to form loops, an armpivotally mounted on the plate and constructed of channel iron havingits free ends bent at an angle, the flanges of the channel ironbeing outand overlapped and secured together, tension springs engaged by the saidloop and fastened to the said angularly bent portion of the channeliron, an elongated loop mounted on the door and a roller carried by thesaid Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

iron having its free ends bent at an angle, Y

the flanges of the channel iron being cut and overlapped and securedtogether, ten-A sion springs engaged by the said loop and fastened tothe said angularly bent portion of the channel iron, an elongated Aloopmounted on the door and a roller carried by the said angularly bent endof the arm and received in the said loop, the terminals ofY the flangesof the channel iron being disposed on the opposite side of the saidloop,

and having the said roller mounted therebetween.

In testimony whereof I afiix my signature in presence ot tivo Witnesses.

Y WILLIAM G. JUST. Witnesses G. A. PETERSON, R.. MILLER.

Washington, D. C.

